Mu Yuan has no intention of using the time traceback talisman for the current trajectory.

Even if Mu Yuan pays the chivalrous value required to purchase the time retracement talisman now, Mu Yuan uses more places to use chivalrous value, so save as much as possible!

In fact, if you only start from the benefits, it is actually better for Mu Yuan to use the time tracer directly, and the time saved may be able to earn more chivalrous value.

In those days when I first entered the public security team, Mu Yuan must have done this.

But now Mu Yuan has more ideas.

He hopes to summarize some practical techniques and tactics available to other police officers through his reconnaissance ideas, which can be widely promoted throughout the province and even across the country.

After all, no matter how powerful you are, how many cases can you solve every day? Not to mention the whole country, just the cases solved every day in the province can easily crush yourself.

Therefore, from the perspective of cracking down on illegal crimes, Mu Yuan prefers to use conventional means to solve cases.

If other methods are combined later, this problem will still not be solved, and it will not be too late to use time traceback at that time.

Viewing monitoring seems to be a simple thing, but that is just the most basic application. Really regulating monitoring is definitely a technical job.

Whether it is combined with space-time analysis, humanistic geographical environment and other factors, or even knowledge such as criminal psychology, it is worth in-depth discussion.

From this perspective, this is definitely an interdisciplinary subject.

In terms of technology, Mu Yuan is undoubtedly a big-name existence in this industry.

Perhaps there is no abnormality in the picture of a certain surveillance point, but if you connect multiple surveillance points to watch, you can see some clues.

Even by comparing the pictures at different time points, you can occasionally get some detailed information.

However, this process is undoubtedly very long and exhausting.

Fortunately, Mu Yuan is not in a hurry for this time now.

As time passed, more and more information was recorded on the blank paper in front of Mu Yuan.

...

The next morning, the Jinchuan District Branch Criminal Case Study Room.

Brigade Wan sat on a chair: "Mu Brigade, everyone, let's summarize the information we have in our own hands first."

"This is the basic information of these four people we found."

"This first one is Li Xi, female, from Southeast Province, 35 years old, and a returnee. She started working at Xihua Chaoyang Biotechnology Co., Ltd. last year."

"The second one is Feng De, male, from Dameng Province. He is 41 years old and has a university degree. He once worked in a law firm called Bo'an, and his subsequent employment information is not clear."

"The third person, Du Lin, female, from Guizhou Province, 36 years old, with a university degree. The specific employment information is unknown. This person is the woman we locked in before who appeared near the scene of Hu Tian's fallen river."

"The fourth person, Wang Feng, male, from Hei Province, 32 years old, with a high school education. He once had a record of engaged in security business. But the current employment information is not clear."

"Based on our investigation this day and to cooperate with the public security organs where these people are registered, we have roughly understood the following situation."

"Except for Li Xi, the other three people have only appeared in Xihua City recently. Before that, Feng De and Du Lin had records of peers, and more than once. Wang Feng also had records of peers with Feng De, but only once. Li Xi had no relationship with these three people, at least there was no relationship from the information we found."

"When Feng De and the other two came to Xihua City this time, they came from different cities, and the time was almost concentrated in one or two days, and they should have been invited in advance. Through our checking of the call information of the three, we found that there was no call record between the three of them. Even the phone cards we found related to them had very few calls in the past ten days. This is almost certain that the three of them had phone cards that did not belong to their real-name information. From this point, it can be seen that they must have an ulterior motive for going to Xihua City."

"As for Li Xi, we have almost checked all the information we can check, and she has no intersection with the other three."

Speaking of this, Wan Battalion paused and looked at Mu Yuan.

Mu Yuan said with a serious expression: "I carefully checked the relevant surveillance video yesterday. Taking Hu Tian's hot pot restaurant as the basis, I pushed them forward and back for several hours and saw their movements from the surveillance videos in the city. I just heard that you talk about the call information from the Wan Brigade, and I recalled carefully that there were at least two surveillance cameras. We could use this to conduct an investigation to lock the phone number that Feng De used in Xihua City. As for the phone number of the other two, we could find out the contact methods between the four people, and at the same time find out their recent activity trajectory in Xihua City."

"This is an important clue!" Team Wan said happily, "Where is the specific location?"

"Guanglin Street Eve." Mu Yuan said.

Brigade Wan immediately said: "Wang Ming, take this information and go to the operator to check it."

"No problem!" Wang Ming immediately responded, got up and left the study room.

Then, the Academic Office fell into a brief silence.

Wan Dabao said: "Everyone, I think these four people are a bit strange. One doctor has nothing to do with the other three, so why did he get together? What is the purpose of their gathering together?"

Mu Yuan nodded and said, "This is exactly what I doubt. However, I think the best entry point among these four people may be Li Xi."

"May Team Mu, why?" Many people were very puzzled.

Mu Yuandao: "It's very simple! Think about it, since these four people have gathered in Xihua City, it means that what they want to do is related to some people or certain things in Xihua City. Among the four of them, only Li Xi stayed in Xihua City for the longest time. In this way, we can make a bold inference. Feng De and the other two went to Xihua City, either because they were invited by Li Xi, or... the four of them had already planned it."

"Then why can't Feng De and the other two contact Li Xi after they arrived in Xihua City?"

"The relationship between the four people shown in the surveillance information we currently have is not like the first time we met. Moreover, even if Feng De and the other two met Li Xi after they arrived in Xihua City, the matter here must be inseparable from Li Xi." Mu Yuan said.

No one refuted this time.

Mu Yuan suddenly asked, "Battle Wan, have you investigated Li Xi's details?"

"I checked it! The specific information is here." Team Wan handed over a piece of information.

Mu Yuan took it and browsed it quickly. The information included Li Xi’s situation in the company, her residence, and even some of her activities in Xihua City.

All of this is in line with the rules and no abnormalities can be seen.

If there must be something suspicious, it is that she is not married yet.

But in big cities nowadays, isn’t it normal for a 35-year-old unmarried woman? What’s more, this is still a female doctor.

However, after Mu Yuan finished reading the information, he looked up and said, "Battle Wan, don't you think this Li Xi is very strange?"

"Strange?" Team Wan thought for a while and said, "Nothing is strange."

"She lives in Xihua City almost at two points and one line." Mu Yuan said, "Battle Wan, please immediately have someone to go to the side to see how Li Xi gets along with her colleagues in the company."

Brigade Wan immediately responded, and then called two investigators to do the matter.

Mu Yuan continued: "Also, in the information we found, Feng De and the other two did not have any records of staying in the hotel in Xihua City. This shows that they have a place to stay in Xihua City. But they have just arrived in Xihua City, where did this place to stay? I think this must have been arranged by Li Xi for them in advance, and it was not the hotel they arranged, but a place they rented."

Team Wan frowned and said, "In this way, it will be difficult to find the place for these three people. Although our city has further strengthened the management of the rental field in recent years, there are definitely rental houses that are free from supervision."

Mu Yuandao: "Don't rush to find a place to stay. We can wait until the mobile phone numbers used by the three of them are found before doing this. The focus of the focus now is Li Xi."

"This is OK!" said Wan Battalion seriously, "I am mainly worried that when Feng De and the other two left Xihua City, this will be very unfavorable to our investigation."

...

Mu Yuan's request was successfully implemented, and he personally led the team to monitor and track Li Xi.

According to the current situation they have, Li Xi has been working these days, and there is no phenomenon of being late or leaving early, just like her in the past year.

Through the police from the Jinchuan District Criminal University in his company to investigate and find out that Li Xi is mainly engaged in R&D work in the company.

In this regard, the police could not have learned too many details about their work. However, they learned one thing: Li Xi has never had a meal with any other colleagues since she started working. Although she looked kind, she gave people a feeling of keeping people from thousands of miles away.

This is also the exception.

Humans are social animals. If Li Xi had his own life circle in Xihua City, then it is understandable that he works in the company but does not participate in the company's dining activities.

But Li Xi has no acquaintances in Xihua City!

She was neither from her hometown in Xihua City nor from the university she studied in Xihua City. It was even the first time she came to Xihua City more than a year ago.

On the other hand, a man who never had dinner with his colleagues immediately accompanied them to have a hot pot after Feng De and the other three arrived in Xihua City, which was very abnormal.

At the same time, this also shows that Li Xi and Feng De have a close relationship.

So, as long as they keep a close eye on Li Xi, they will definitely show their strength.

"Mu, what can we see when we sit here?" Li Ming said helplessly in a Citroen C5 car, "Why... I'll touch it in and take a look?"

Mu Yuan smiled and said, "If the other party is just an employee in the administrative class, you can still see it when you go in. But the other party is a staff member engaged in R&D in the company, so you can go in just by saying that you can go in? Unless you indicate your identity, it will be exposed."

"Then we can only wait like this?"

Mu Yuan glanced at him and smiled in his heart: You can only wait, I am not.

But he couldn't say this, he said quietly: "Otherwise, what else can you do?"

"All right!"

As he was talking, a woman walked out from the gate of the building not far away.

She was wearing a floral long dress. Although she was not pretty, she also had an intellectual beauty.

As the saying goes, "It is a natural and elegant person who has a poetic spirit, and this is roughly the case."

Li Ming's eyes suddenly shone and he hurriedly said, "Master Mu, look... is it her?"

In fact, without Li Ming's greeting, Mu Yuan's gaze had already fallen on the other party and said, "It's her!"

"Follow up?" Li Ming said.

"Wait first!"

This woman is Li Xi!

She walked quickly to the street, reached out to stop a taxi, and quickly got on.

Mu Yuan picked up the walkie-talkie next to him and said, "I got on the West ATX380 taxi and I'm watching it."

"I understand! Team Mu!"

The person who answered was the investigators who stayed on the team. They were responsible for assisting Mu Yuan in tracking through surveillance cameras. Although Mu Yuan did not need assistance, who would not make Team Wan feel relieved? He was afraid that if he lost it, he would miss the opportunity to fight.
To be continued...